Portions of shade-acclimated shoots of Cucurbita pepo L. (pumpkin) and Vinca major L. were rapidly transferred to full sunlight exposure and chlorophyll fluorescence emission, pigment composition, ...

In higher plants, etioplast to chloroplast differentiation is characterized by dramatic ultrastructural changes of the plastid and a concomitant increase in chlorophylls and carotenoids. Whereas the ...

The xanthophyll violaxanthin is converted to zeaxanthin (via the intermediate antheraxanthin) whenever chloroplasts absorb excess light. Zeaxanthin acts as a key facilitator of the dissipation of ...

For plants and algae that carry on photosynthesis, light can be too much of a good thing. On a bright, sunny day, a plant might only be able to utilize 20 percent or less of absorbed sunlight. The ...

Trees’ leaves contain pigments that play critical biological roles while also reflecting colors like green, yellow, orange and even brown. (Courtesy Photo) COLLEGE STATION The transition of trees’ ...

CASTLE 1 concluded from the observations of Zophoniasson that the yellow fat appearing in some Icelandic sheep is due to a simple recessive character in inheritance. I have recently examined the ...